If buildings could make distress signals the Mercantile Library on Chestnut Street would fill the ears of all in Center City. The once sleek, mid-century modern structure, vacant for 26 years, now sits in a state of slow decay. Interior architect Shila Griffith says the bones of the building are still strong and envisions a co-working space for medical industrial designers with this month's Marked Potential > more

Next up in our Marked Potential series is the Robinson Building at 10th and Market. Interior architect and designer Shila Griffith envisions a multi-screen documentary film theater complex and filmmaker workspace behind the scrolling, Modernist facade of the former women's department store > more